From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=MAILING_LIST_MULTI, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 29452 invoked from network); 27 Jun 2023 16:07:48 -0000 Received: from minnie.tuhs.org (50.116.15.146) by inbox.vuxu.org with ESMTPUTF8; 27 Jun 2023 16:07:48 -0000 Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id EF0B4402D8; Wed, 28 Jun 2023 02:07:44 +1000 (AEST) Received: from sdaoden.eu (sdaoden.eu [217.144.132.164]) by minnie.tuhs.org (Postfix) with ESMTPS id CAEBF402CE for ; Wed, 28 Jun 2023 02:07:35 +1000 (AEST) Date: Tue, 27 Jun 2023 18:07:17 +0200 Author: Steffen Nurpmeso From: Steffen Nurpmeso To: Steve Jenkin Message-ID: <20230627160717.1ppNv%steffen@sdaoden.eu> In-Reply-To: <20230627155001.KTa3w%steffen@sdaoden.eu> References: <950C04A3-3D30-48ED-B956-74EDB7C910E3@iitbombay.org> <5C26BE4B-2E6C-4E02-9536-3EA774FB6B47@canb.auug.org.au> <20230627155001.KTa3w%steffen@sdaoden.eu> Mail-Followup-To: Steve Jenkin , COFF User-Agent: s-nail v14.9.24-485-g9a24819228 OpenPGP: id=EE19E1C1F2F7054F8D3954D8308964B51883A0DD; url=https://ftp.sdaoden.eu/steffen.asc; preference=signencrypt BlahBlahBlah: Any stupid boy can crush a beetle. But all the professors in the world can make no bugs. Message-ID-Hash: 6ANS3HGANBVF6GX26SV7QTCIECFB42VA X-Message-ID-Hash: 6ANS3HGANBVF6GX26SV7QTCIECFB42VA X-MailFrom: steffen@sdaoden.eu X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: COFF X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [COFF] Re: Shell script advice: using 'dd' to write multiple media List-Id: Computer Old Farts Forum Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: And i'd wish the shell had "set -o pipefail" much much earlier. So you (sometimes) do things like #(set -o pipefail) >/dev/null 2>&1 && set -o pipefail es=$(exec 3>&1 1>&2; { the_worker "$cmd"; echo $? >&3; } | mytee | mymail) that are super neat (ie that this is possible syntax-wise!), but terrible and cryptical and surely error-prone to do. --steffen | |Der Kragenbaer, The moon bear, |der holt sich munter he cheerfully and one by one |einen nach dem anderen runter wa.ks himself off |(By Robert Gernhardt)